Based on the matrix optics, the propagation and transformation characteristics of Gaussian beam through a parabolic gradient-index rod with the spherical end surfaces are analyzed.
本文采用矩阵光学的方法，分析了高斯光束经球端面抛物型梯度折射率棒透镜的传播与变换特性。
These new designs of Rod End and Spherical plain bearing families set the industry's quality and performance standards.
这些新的设计，杆端关节轴承和关节轴承的家庭设置产业的质量和性能标准。
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